galena crystal with chalcopyrite crystalsTri-State districtThis specimen is an attractive
combination of two minerals, galena and chalcopyrite.
Chalcopyrite is an
iron copper sulfide and an important ore of copper.
The chalcopyrite
crystals are the bright metallic yellow crystals sitting on top of a
gray, cubic
galena crystal.galena
2
Photo is copyright free only for
non-commercial educational uses.
Just credit photo to R.Weller/Cochise College.